Brillouin backscattering in a high-index doped silica chip waveguide

M Zerbib (1) , V T Hoang (2) , J C Beugnot (1) , K P Huy (1) , B Little (3) , S T Chu (4) , D J Moss (5) , R Morandotti (6) , B Wetzel (2) , T Sylvestre (1)

1 FEMTO-ST - Franche-Comté Électronique Mécanique, Thermique et Optique - Sciences et Technologies (UMR 6174)
2 XLIM - XLIM
3 QXP Technologies Inc - QXP Technologies Inc
4 CUHK - City University of Hong Kong [Hong Kong]
5 Swinburne University of Technology (Hawthorn campus)
6 EMT-INRS - Énergie Matériaux Télécommunications - INRS

We investigate, both experimentally and theoretically, Brillouin backscattering in a 50-cm long high-index (n=1.7) doped-silica glass photonic chip waveguide. The Brillouin spectrum features a broad (350 MHz) acoustic resonance at 16 GHz, in good agreement with theory and numerical simulations. Brillouin gain was estimated to be around 0.09 1/m/W.

Mots clés: Brillouin Light Scattering; Photonic Integrated Circuit

Domaines: Physique [physics]

M Zerbib, V T Hoang, J C Beugnot, K P Huy, B Little, et al.. Brillouin backscattering in a high-index doped silica chip waveguide. Workshop on OptoMechanics and Brillouin Scattering, Campinas, Feb 2024, Campinas, Brazil. ⟨hal-04573131⟩